6988 Deep Groove Ball Bearing Specifications
Bore d (mm)
440
Outer D (mm)
600
Width B (mm)
74
Dynamic rating Cr (kN)
435
Static rating Cor (kN)
680
Grease limit speed (r/min)
800
Oil limit speed (r/min)
1000
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 6988?
RUIST 6988 Deep Groove Ball Bearing: bore d = 440 mm, outer diameter D = 600 mm, width/height B = 74 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 6988 carry?
Dynamic load rating Cr = 435 kN and static load rating Cor = 680 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 6988 typically used?
Deep Groove Ball Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 6988 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 440 mm, OD 600 mm and width 74 mm match ISO dimensions, 6988 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.